NULL Pointer Dereference Affecting mrubyc/mrubyc package, versions [,4.0.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published7 Jul 2026
- disclosed7 Jul 2026
- creditUnknown
Introduced: 7 Jul 2026
CVE-2026-38976 (opens in a new tab)How to fix?
Upgrade mrubyc/mrubyc to version 4.0.0 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference in the op_super process due to a missing runtime guard for top-level super. An attacker can cause a crash or denial of service by invoking the super operation at the top level, leading to a NULL pointer dereference.